Most DIY audio projects start in audio forums. Often a limited amount of PCBs will be ordered and distributed. This could be simplified in the future by using circuits.io. The platform allows users to create electronics designs and PCBs.I will transform one of my older project to this platform in the next time. What would you like?
Echonest runs a music fingerprinting database (works similar to the popular Shazam application) that is completely open source and also the database is available for download. The project is named echoprint.
This looks like a nice addition to the RTP music distribution system. I guess, I have to dig a bit deeper into this software.